FR2474416A1 - Radio controlled braking system for motor vehicle - uses signal from control vehicle to operate solenoid which releases compressed air to actuator which moves brake pedal - Google Patents

Abstract

During driving tuition with the pupil alone in one vehicle and the instructor in another, emergency braking of the pupil's vehicle is initiated by the instructor using a radio signal which is received on the pupils vehicle to operate a solenoid valve. The solenoid valve is used to release compressed air from a storage tank to a pneumatic cylinder which actuates the brake pedal through a pivoted rod. The rod slides inside a hollow tube guide fastened to brake pedal so that the brake pedal may be operated normally, with the tube sliding along the rod attached to the pneumatic cylinder. A shoulder on the rod immediately operates the brake pedal if the pneumatic cylinder moves the rod in the direction of brake pedal operation.

Description

 The present invention relates to safety in all the road training centers practicing teaching on the development area "Driving alone", the aim being to avoid any possible accident due to lack of control of the vehicle. Fri

To the pedal actuating the main brake, there is added another pedal commonly called dual control, allowing the monitor to intervene on it.

In the case QÙ 11 pupil is alone behind the wheel, no emergency action can be taken on the dual control; we currently have the engine power supply cut by radio-transmitter-receiver + relay, which causes an ineffective slowdown when the vehicle is moving rapidly, by so-called engine brake action, this does not stop the vehicle .

The device according to the invention makes it possible to stop the vehicle under the same conditions as an instructor accompanying his pupil would. It acts directly on the double control of the main brake being controlled remotely by a monitor monitoring the developments of vehicles traveling on the training area; it is sufficient for it to brake the vehicle by pressing a button on the radio transmitter device by releasing the latter, the vehicle is freed from the braking action.

 The device has the possibility of acting while leaving free the braking action of the pupil or a monitor.

 The accompanying drawings are diagrams of the device.

As shown, the device includes a mobile transceiver station (1) equipped with a button for radio selective calling, another key transmitting a signal to a fixed receiver-transmitter station (2 ) installed in the vehicle. The signal is transmitted to a relay (3) which supplies direct current -ss2 V- an electro-valve (4) which releases the pressure of compressed air contained in a reservoir (5) inflated to have a reserve of air sufficient for more than 50 actions on the brake (in the case of work on the track, the reserve of compressed air is inflated by compressor; optionally, the vehicle may also be equipped with a small compressor).

The compressed air thus released actuates a pneumatic cylinder (6) coupled to the double brake control (7) by a sliding part (8) linked to the lower clevis of the cylinder by an axis another part (9) links the upper part of the actuator on the dashboard, bearing under it as well as on the vehicle apron. The other part of the sliding part (10) is connected to the double brake control by flanges allowing the adjustments.

Taking into account the number of vehicles intended for teaching, the invention could title realized at lower price on the industrial level.

The device which is the subject of the invention (depending on the regulations in force) allows pupils alone behind the wheel to operate in complete safety under the supervision of instructors. The latter have remote radio transmitters, allowing them to converse with the students, but also, when the vehicles are equipped with this device, to slow them down or stop them in case they fail.

Claims (4)

1 - The remote braking device characterized by the fact that it includes a radio transmitter, a radio receiver decoding a zone to a relay supplying an electro-valve which releases an air pressure contained in a reserve actuating a jack pneumatic 2 double effect compressing or decompressing the double brake control connected to the main brake. 2 - The remote braking device according to claim 1 characterized by the fact that the actuator is coupled by a removable pin to a suportort fixed to the vehicle. 3 - The remote braking device according to claim 1 characterized by the fact that the actuator actuates the double brake control pedal from a sliding clamp in a recess carried by the pedal, leaving it completely independent. 4 - The remote braking device according to claim 1 characterized by the fact of having the possibility of braking the vehicle without locking the wheels, by successive presses of the button of the radio-transmitting device, this having the effect of actuate the actuator in one direction then in the other, which reproduces the action of the emergency braking.